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Vishay General Semiconductor - Diodes Division 1.5SMC15CAHM3/I
- Part No.:
- 1.5SMC15CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CAHM3/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,238
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Product details
Overview
1.5SMC15CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 15 V standoff voltage (VWM), 16.7 V minimum breakdown voltage (VBR), 21.2 V maximum clamping voltage (VC) at 70.8 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC15CAHM3/I datasheet, 1.5SMC15CAHM3/I pinout, 1.5SMC15CAHM3/I application, or 1.5SMC15CAHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMC (DO-214AB) package details, clamping performance under surge conditions, and direct alternative part comparisons for ESD and lightning transient suppression design.
Technical Context
The 1.5SMC15CAHM3/I operates as a bidirectional silicon avalanche diode, leveraging glass-passivated junction technology to achieve fast response (<1 ps) and low incremental surge resistance. Its symmetrical V-I characteristic enables identical clamping behavior in both polarities, eliminating polarity concerns in AC-coupled or floating signal paths.
Rated for 150 °C maximum junction temperature and MSL Level 1 moisture sensitivity, it supports reflow soldering up to 260 °C peak. The device is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for automotive-grade power rail and CAN/LIN bus protection where reliability under thermal cycling and repetitive transients is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 15 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Min) | 16.7 V at 1 mA - guaranteed avalanche initiation point; ensures predictable turn-on during transients |
| VC (Max) | 21.2 V at 70.8 A (10/1000 µs) - peak clamped voltage seen by protected circuit; limits stress on downstream ICs |
| PPPM | 1500 W - surge energy handling capacity; sustains 10/1000 µs lightning-induced surges per IEC 61000-4-5 |
| IPPM | 70.8 A - peak pulse current supported without failure; validates protection level for 15 V systems |
| TJ max | 150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - certified for automotive applications including engine control, body electronics, and ADAS sensor modules |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 22-B102 solderability requirements. Bidirectional construction means no polarity marking - terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485, CAN), and floating power rails without polarity constraints |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surge events on 15 V supply lines with margin |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per JESD47 |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing |
| MSL Level 1 | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking preconditioning |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting 12 V supply and signal lines of radar, camera, and ultrasonic sensors against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry to clamp transients before they reach LDOs, ADCs, or microcontrollers. Use Value: Limits clamped voltage to 21.2 V, preventing damage to 3.3 V/5 V logic while surviving repeated 100 A surge tests per AEC-Q101. |
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field-induced surges and ESD. IC Role / Device Role / Timing Role: Placed across input terminals to shunt transient energy away from precision op-amps and isolation amplifiers. Use Value: 15 V VWM aligns with common loop supply headroom; 21.2 V clamping avoids saturation of 24 V-rated front-end components. |
| Telecom Power Feeding | Consumer USB-C Port Protection |
Use Scenario: Safeguarding PoE-powered devices (e.g., IP cameras) against induced surges on 48 V DC power pairs. IC Role / Device Role / Timing Role: Paired with common-mode chokes to suppress differential-mode transients on PSE/PD side. Use Value: 1500 W rating handles IEEE 802.3bt surge requirements; bidirectional symmetry simplifies layout on dual-polarity feeds. |
Use Scenario: Secondary-level protection for USB-C CC and VBUS lines after primary GDT or polymer fuse. IC Role / Device Role / Timing Role: Fast-acting clamping element limiting voltage overshoot during hot-plug ESD events (IEC 61000-4-2 ±15 kV). Use Value: Sub-1 ns response time prevents latch-up in USB PD controllers; 21.2 V clamping stays below VBUS absolute max ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Same VWM (15 V), lower PPPM (600 W), SMB (DO-214AA) package - 30% smaller footprint, 60% lower surge rating | Suitable for consumer-grade, non-automotive applications with lower surge exposure (e.g., USB peripherals) | Select SMBJ15CA only when space-constrained and surge threat level is ≤ IEC 61000-4-5 Level 2 (1 kV) |
| 1.5KE15CA | Same VWM (15 V), same PPPM (1500 W), but axial DO-15 package - not SMT-compatible, higher inductance | Used in legacy through-hole designs or high-reliability military/aerospace where leaded mounting is mandated | Choose 1.5KE15CA only for through-hole assembly or when board-level EMI filtering requires axial geometry |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CAHM3/I uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and full 1500 W surge capability - making it the only option among the three validated for automotive under-hood deployment with zero PCB redesign.
Availability
1.5SMC15CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom PoE equipment, and USB-C power delivery systems requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for 1.5SMC15CAHM3/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The 1.5SMC Series targets high-energy transient suppression in harsh environments - engineered specifically for automotive, industrial, and telecom applications demanding AEC-Q101 validation and 1500 W surge immunity.
FAQ
What is the clamping voltage of the 1.5SMC15CAHM3/I at its rated peak pulse current?
The 1.5SMC15CAHM3/I has a maximum clamping voltage (VC) of 21.2 V at 70.8 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within safe operating voltage margins.
Is the 1.5SMC15CAHM3/I suitable for automotive applications?
Yes, the 1.5SMC15CAHM3/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HM3" suffix (halogen-free, RoHS-compliant, AEC-Q101 qualified). It has passed stress tests including temperature cycling, high-temperature operating life, and surge robustness per JESD47 - making it appropriate for engine control units, ADAS sensors, and body electronics where reliability under thermal and electrical stress is mandatory.
What does the "CA" suffix mean in 1.5SMC15CAHM3/I?
The "CA" suffix in 1.5SMC15CAHM3/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., "A" suffix), the CA version has no polarity marking and is used where AC signals, differential buses, or floating supplies require equal clamping regardless of voltage polarity - such as in RS-485, CAN, or Ethernet PHY protection.
What package type does the 1.5SMC15CAHM3/I use, and what are its key mechanical properties?
The 1.5SMC15CAHM3/I uses the SMC (DO-214AB) surface-mount package: dimensions 7.11 mm × 6.22 mm × 2.62 mm, with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. It meets UL 94 V-0 flammability rating, supports MSL Level 1 handling, and is optimized for automated placement - enabling high-yield assembly in automotive and industrial production lines.
How does the 1.5SMC15CAHM3/I compare to unidirectional TVS diodes with the same standoff voltage?
The 1.5SMC15CAHM3/I differs from unidirectional equivalents (e.g., 1.5SMC15AHM3/I) by providing identical clamping performance in both polarities - eliminating need for polarity-aware layout or external diode pairing. While unidirectional versions offer slightly tighter VBR tolerance and lower leakage at VWM, the CA variant's symmetry simplifies design for AC-coupled or bidirectional data lines, reducing BOM count and layout complexity without sacrificing 1500 W surge capability.
1.5SMC15CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC15CAHM3/I FAQ
1.How can I place an order for 1.5SMC15CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CAHM3/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1.5SMC15CAHM3/I reliable?
The price and inventory of 1.5SMC15CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15CAHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CAHM3/I?
1.5SMC15CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CAHM3/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1.5SMC15CAHM3/I?
For technical support, including 1.5SMC15CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC15CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CAHM3/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1.5SMC15CAHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CAHM3/I?
All 1.5SMC15CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CAHM3/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1.5SMC15CAHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC15CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15CAHM3/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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